Quick-assembly containing box

ABSTRACT

A quick-assembly containing box formed by folding a cardboard includes a bottom board, left- and right-side boards extending from the periphery of the bottom board, and front- and rear-side boards folded inwardly onto the bottom board to define a half-folded state. When the left- and right-side boards are pushed from the outside to the inside and erected, four positioning pieces already folded and adhered to the left- and right-side boards can push the front- and rear-side boards in a forward direction to erect, so as to achieve the effect of assembling the containing box of a three-dimensional state quickly.

FIELD OF INVENTION

The present disclosure relates to a containing box formed by folding a cardboard and designed to be assembled from a half-folded state into a three-dimensional state quickly.

This disclosure claims the priority of R.O.C. Patent Application No. 108103518 filed on Jan. 30, 2019 and the technical characteristics of this disclosure are disclosed in the figures of R.O.C. Patent Application No. 108103518 and the cited method is merged into this disclosure.

BACKGROUND OF INVENTION Description of the Related Art

In general, a containing box made of paper not just can protect a product only, but also can set off the quality of the product. For example, a hardcover box for packaging a high-price product such as a mobile phone, a tablet PC, etc. is made of a relatively thick cardboard to provide a more beautiful visual effect to the overall package.

The containing box may be formed by folding, stacking and gluing the cardboard. In general practice, the cardboard is assembled into a flat half-folded state first in order to save storage and stacking space, and then the half-folded cardboard is transported to a store and sellers of the store may assemble the half-folded cardboard into a containing box of a three-dimensional state for containing and packaging products.

With reference to FIG. 1 for a conventional cardboard 101, the cardboard 101 comprises a bottom board 102, a left-side board 103 and a right-side board 104 extending from both left and right sides of the bottom board 102 respectively, and a front-side board 105 and a rear-side board 106 extending from both front and rear sides of the bottom board 102 respectively. Wherein, each of the four corners at where the left- and right-side boards 103, 104 and the front- and rear-side boards 105, 106 are intersected has a linking piece 200, and each linking piece 200 has an oblique crease 201 to divide the linking piece 200 into a first folding piece 202 adjacent to the left- and right-side boards 103, 104, and a second folding piece 203 adjacent to the front- and rear-side boards 105, 106. After the left- and right-side boards 103, 104 are folded towards the bottom board 102, the four second folding pieces 203 are adhered to both sides of the adjacent front- and rear-side boards 105, 106 to form the containing box of a flat half-folded state 100 a as shown in FIG. 2.

In FIGS. 3 and 4, when a user lifts the left- and right-side boards 103, 104 of the half-folded state 100 a outwardly to erect the left- and right-side boards 103, 104, the first folding pieces 202 of the four linking pieces 200 are driven to move synchronously. After the action force is transmitted through each oblique crease 201 and the second folding pieces 203 adhered to the front- and rear-side boards 105, 106, each second folding piece 203 pulls the respective front- and rear-side boards 105, 106 to erect in order to form the containing box 100.

In FIG. 3, the action force is transmitted from the left- and right-side boards 103, 104 to drive the first folding pieces 202 of the four linking pieces 200 and then transmitted inwardly from the outer side of the first folding piece 202 and through the oblique crease 201 disposed on the inner side, and then the second folding piece 203 disposed on the outer side of the oblique crease 201 is pulled in an opposite direction from the inside to the outside, and finally the front- and rear-side boards 105, 106 are driven to erect.

When the four linking pieces 200 pull the front- and rear-side boards 105, 106 to move, the first folding piece 202 and the second folding piece 203 are folded along the oblique crease 201 to define an acute angle, so that the first folding piece 202 and the second folding piece 203 will be rebounded in a direction which is originally not bent or folded to produce a rebound resistance which is opposite to the action force, and such rebound resistance will affect the erection of the front- and rear-side boards 105, 106 and cause a very unsmooth movement or stagnation during the process of applying force. The rebound resistance is particularly significant in a thick cardboard, so that after each side board is folded, the side boards tend to bounce easily back to their originally not being bent or folded, and such rebound resistance will affect the speed of assembling the containing box.

In addition, a gap 107 formed between the second folding piece 203 and the front- and rear-side boards 105, 106 of the prior art as shown in FIG. 1 facilitates the process of folding the cardboard into a flat half-folded state, but after the containing box is assembled, the gap 107 between the second folding piece 203 and the front- and rear-side boards 105, 106 will have rough edges formed as shown in FIG. 3 and thus affecting the overall appearance of the containing box. Furthermore, the gap also weakens the overall structural strength of the containing box and affects the product packaging function and quality.

SUMMARY OF THE INVENTION

Therefore, it is a primary objective of this disclosure to overcome the aforementioned drawbacks of the prior art by providing a quick-assembly containing box that specially improves the structure of the aforementioned linking piece, so that the rebound resistance of the linking piece can be reduced to provide a smooth transmission of the action force and prevent stagnation during the process of assembling the containing box from a half-folded state into a three-dimensional state.

To achieve the aforementioned and other objectives, this disclosure discloses a quick-assembly containing box formed by folding a cardboard integrally, and the quick-assembly containing box comprises a bottom board, a left-side board and a right-side board extending from both left and right sides of the bottom board respectively, and a front-side board and a rear-side board extending from both front and rear sides of the bottom board respectively, wherein each of the four corners at where the left- and right-side boards and the front- and rear-side boards are intersected has a linking piece, and each linking piece has an oblique crease extending diagonally from a junction of the left- and right-side boards and the front- and rear-side boards as a starting point to the outer side, so as to divide each linking piece into a first folding piece adjacent to the sides of the front- and rear-side boards and a second folding piece adjacent to the left- and right-side boards, characterized in that the outer side of each first folding piece has a positioning piece extending from the oblique crease towards the left or right side, and each positioning piece is disposed on the outer side of an adjacent second folding piece, and a cut line is formed between the positioning piece and the second folding piece and the cut line extends from the inside to the outside up to the oblique crease, so that each positioning piece can use the oblique crease as a baseline for folding in advance; and when the front- and rear-side boards are folded towards the bottom board into a half-folded state, the inner surfaces of the first and second folding pieces of each linking piece are stacked closely onto the adjacent left- and right-side boards respectively, and the outer surface of each already folded positioning piece is adhered and fixed to the left- and right-side boards; when the left- and right-side boards are pushed from the outside to the inside with respect to the bottom board to erect the left- and right-side boards, and the positioning piece of each linking piece is provided for pushing and erecting the front- and rear-side boards by the first folding piece.

By the aforementioned structure, when the containing box is situated at the half-folded state, the positioning piece of each linking piece is reversely folded towards the first folding piece and then fixed to the left- and right-side boards, so that when each side board is erected with respect to the bottom board, the positioning piece and the first folding piece are spread open from the folded state, and a pushing force greater than the rebound resistance produced between the folded first and second folding pieces is applied to the left- and right-side boards.

Therefore, when the containing box is assembled, the action force is transmitted to drive the positioning pieces of the four linking pieces from the left- and right-side boards, and then to pass the oblique crease aligned with the inner side from the outside to the insider, and finally to drive the first folding piece disposed on the inner side of the oblique crease in a forward direction to push the front- and rear-side boards to erect and reduce stagnation while a user is applying the force, so as to achieve the effect of assembling the containing box quickly.

The implementation of each component is described further below:

In an embodiment, each positioning piece is cut evenly with the left and right edges of the left- and right-side boards after the positioning piece is adhered and fixed to the inner surfaces of the left- and right-side boards.

In an embodiment, the left- and right-side boards have a cover board extending outwardly from the left and right edges, and after the left- and right-side boards and the front- and rear-side boards are lifted and erected with respect to the bottom board, the two cover boards are reversely folded towards the inner surfaces of the left- and right-side boards and stacked onto the inner surfaces of the two corresponding first folding pieces and the two corresponding positioning pieces respectively to cover the two corresponding first folding pieces and the two corresponding positioning pieces.

In an embodiment, the front- and rear-side boards have an auxiliary reinforcing board extending outwardly from the front and rear edges thereof, and the two auxiliary reinforcing boards are folded reversely and fixed to the inner surfaces of the corresponding front- and rear-side boards respectively.

In an embodiment, both left and right edges of the two auxiliary reinforcing boards have a flap extending and fixing to the first folding piece of the corresponding side.

In an embodiment, the outer edges of each cover board and each auxiliary reinforcing board have a side strip extending therefrom, and the side strip is inwardly folded and stacked onto the inner surfaces of the corresponding cover board and auxiliary reinforcing board before the containing box is folded, stacked, and assembled.

Compared with the prior art, this disclosure improves the structure of the linking piece to reduce the rebound resistance of the first and second folding pieces effectively, so that when the containing box is assembled from the half-folded state into the three-dimensional state, the action force is transmitted to drive the positioning pieces of the four linking pieces from the left- and right-side boards, and then pass the oblique crease aligned with the inner side from the outside to the insider, and finally drives the first folding piece disposed on the inner side of the oblique crease in a forward direction to push the front- and rear-side boards to erect and reduce stagnation while a user is applying force, so as to achieve the effect of assembling the containing box quickly. In addition, the arrangement of each positioning piece can waive the gap between the second folding piece of each linking piece and the left- and right-side boards in order to cut the cardboard, so that a folding edge is formed at the edges of the four corners separately after the containing box is assembled, so that the overall structure will be very secured. Unlike the prior art, there will be no rough edges, and the overall appearance of the containing box of this disclosure will be more beautiful.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a planar view showing a plane development of a conventional containing box;

FIG. 2 is a schematic view showing a half-folded state of a conventional containing box;

FIG. 3 is a schematic view showing an assembling process of a conventional containing box;

FIG. 4 is a perspective view of an assembled conventional containing box;

FIG. 5 is a planar view showing a plane development of a containing box in accordance with a first embodiment of this disclosure;

FIG. 6 is a schematic view showing a half-folded state of a containing box in accordance with the first embodiment of this disclosure;

FIG. 7 is a schematic view showing an assembling process of a containing box of this disclosure;

FIG. 8 is a perspective view of an assembled containing box of this disclosure;

FIG. 9 is a perspective view of a containing box in accordance with a second embodiment of this disclosure;

FIG. 10 is a planar view showing a plane development of a containing box in accordance with a third embodiment of this disclosure;

FIG. 11 is a schematic view showing a flat half-folded state of a containing box in accordance with the third embodiment of this disclosure;

FIG. 12 is a schematic view showing an assembling process of a containing box in accordance with the third embodiment of this disclosure; and

FIG. 13 is a perspective view of an assembled containing box in accordance with the third embodiment of this disclosure.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present disclosure will become clearer in light of the following detailed description of an illustrative embodiment of this disclosure described in connection with the drawings, so that people having ordinary skill in the art can implement the present disclosure according to the description of this specification.

With reference to FIG. 5 for a quick-assembly containing box of this disclosure, the containing box is formed by cutting and folding a cardboard 100 integrally, and the containing box comprises a bottom board 10, a left-side board 11 and a right-side board 12 extending from the left and right sides of the bottom board 10 respectively, and a front-side board 13 and a rear-side board 14 extending from the front and rear sides of the bottom board 10 respectively, wherein each of the four corners at where the left- and right-side boards 11, 12 and the front- and rear-side boards 13, 14 are intersected has a linking piece 20, and each linking piece 20 has an oblique crease 21.

The oblique crease 21 of each linking piece 20 extends diagonally from a junction of the left- and right-side boards 11, 12 and the front- and rear-side boards 13, 14 as a starting point to the outer side, so as to divide each linking piece 20 into a first folding piece 22 adjacent to the front- and rear-side boards 13, 14, and a second folding piece 23 adjacent to the left- and right-side boards 11, 12.

The outer side of each first folding piece 22 has a positioning piece 24 extending from the oblique crease 21 towards the left or right side, and each positioning piece 24 is disposed on the outer side of an adjacent second folding piece 23, and a cut line 25 is formed between the positioning piece 24 and the second folding piece 23, and the cut line 25 extends from the inside to the outside up to the oblique crease 21, so that each positioning piece 24 can use the oblique crease 21 as a baseline for reversely folding towards the first folding piece 22 in advance, and the inner surface of each positioning piece 24 is stacked onto the inner surface of the first folding piece 22.

In FIG. 6, when the front- and rear-side boards 13, 14 are folded towards the middle of the bottom board 10 and stacked onto the bottom board 10, the inner surfaces of the first and second folding pieces 22, 23 of each linking piece 20 are stacked onto the left- and right-side boards 11, 12, and the outer surface of each already folded positioning piece 24 is adhered and fixed to the corresponding left- and right-side boards 11, 12 to form the containing box into a half-folded state.

In FIGS. 7 and 8, when a user pushes the left- and right-side boards 11, 12 of the half-folded state from the outside to the inside with respect to the bottom board 10 to erect the left- and right-side boards 11, 12, the positioning piece 24 of each linking piece 20 will be driven to move synchronously, and the action force transmitting through each oblique crease 21 and each first folding piece 22 will push the front- and rear-side boards 13, 14 in a forward direction to erect and form the of the three-dimensional state.

In the aforementioned embodiment, even when the linking piece 20 has no second folding piece 23 or there is a second folding piece 23 not coupled to the left- and right-side boards 11, 12 and the left- and right-side boards 11, 12 of the half-folded state is erected from the outside to the inside with respect to the bottom board 10, the positioning piece 24 and the first folding piece 22 push the front- and rear-side boards 13, 14 to erect. The arrangement of each positioning piece 24 of this embodiment requires no gap between the second folding piece 23 of each linking piece 20 and the left- and right-side boards 11, 12 for cutting the cardboard, and its advantage resides on that after the containing box is assembled into the three-dimensional state, the first and second folding pieces 22, 23 of the linking piece 20 are formed into a stacking state, and a folding edge 26 is formed at the edges of four corners at where the second folding piece 23 and the left- and right-side boards 11, 12 are intersected. Such arrangement not just increases the structural strength of the four corners at where the left- and right-side boards 11, 12 and the front- and rear-side boards 13, 14 are intersected and the longitudinal pressure resistance of the containing box only, but also improves the overall appearance by using the folding edge 26 and prevents producing rough edges.

When the containing box is situated at the half-folded state, the positioning piece 24 of each linking piece 20 is reversely folded towards the first folding piece 22 and then fixed to the left- and right-side boards 11, 12, so that when each side board is erected with respect to the bottom board 10, the positioning piece 24 and the first folding piece 22 are spread open naturally from the folded state, and a pushing force much greater than the rebound resistance produced between the first folding piece 22 and the second folding piece 23 by folding is applied to the left- and right-side boards 11, 12, so that when the containing box is assembled, the action force is transmitted from the left- and right-side boards 11, 12 to drive the positioning pieces 24 of the four linking pieces 20 and passes through the oblique crease 21 disposed on the inner side from the outside to the inside, and then drive the first folding piece 22 disposed on the inner side of the oblique crease 21 in a forward direction to push the front- and rear-side boards 13, 14 to erect, and reduce stagnation when the user applies the force, so as to achieve the effect of assembling the containing box quickly.

In addition, each linking piece 20 is coupled to the left- and right-side boards 11, 12 and the front- and rear-side boards 13, 14, so that when the containing box is situated at the half-folded state, the users can lift the front- and rear-side boards 13, 14 towards the outer side and erect them with respect to the bottom board 10, and the first folding piece 22 of each linking piece 20 is driven to move synchronously. After the action force passes through each oblique crease 21 and the positioning piece 24 adhered to the left- and right-side boards 11, 12, the left- and right-side boards 11, 12 is driven in a forward direction to be erected and assembled into the containing box of the three-dimensional state.

In summation, when the containing box is situated at the half-folded state, the left- and right-side boards 11, 12 may be pushed from the outside to the inside to drive the front- and rear-side boards 13, 14 to erect, or the front- and rear-side boards 13, 14 may also be pushed towards the outer side to erect and drive the left- and right-side boards 11, 12.

In FIGS. 8 and 9, after each positioning piece 24 is adhered and fixed to the inner surfaces of the left- and right-side boards 11, 12, the left and right edges of the left- and right-side boards 11, 12 are cut evenly to reinforce the strength of the left- and right-side boards 11, 12 and improve the longitudinal pressure resistance of the containing box, so as to prevent the containing box from being deformed by pressing easily. In addition, the positioning piece 24 is designed with an extended length to match with the left- and right-side boards 11, 12 as shown in FIG. 9, so that different sized containing boxes can maintain a high structural stability.

With reference to FIGS. 10 to 13 for the third embodiment of this disclosure, the difference between this embodiment and the first embodiment resides on that a cover board 30 is extended from the left and right edges of the left- and right-side boards 11, 12 separately, and an auxiliary reinforcing board 40 is extended outwardly from the front and rear edges of the front- and rear-side boards 13, 14 separately, and a flap 41 is extended from both left and right edges of the two auxiliary reinforcing boards 40 separately.

In FIGS. 10 and 11, the two auxiliary reinforcing boards 40 are reversely folded and fixed onto the corresponding inner surfaces of the front- and rear-side boards 13, 14 respectively, and the flaps 41 on both left and right sides of the auxiliary reinforcing board 40 are fixed onto the f corresponding sides of the first folding piece 22, and then the front- and rear-side boards 13, 14 and the two auxiliary reinforcing boards 40 are folded towards the middle of the bottom board 10 and stacked onto the bottom board 10 to form a containing box in a flat half-folded state, wherein the method of folding and fixing the positioning piece 24 of each linking piece 20 are the same as those of the first embodiment, and thus they will not be repeated.

In FIGS. 12 and 13, when the user pushes the left- and right-side boards 11, 12 from the outside to the inside with respect to the bottom board 10 in order to erect the left- and right-side boards 11, 12, the positioning piece 24 of each linking piece 20 can drive the first folding piece 22 in a forward direction to push the front- and rear-side boards 13, 14 and the two auxiliary reinforcing boards 40 to move upward and erect. After the first folding piece 22 and the positioning piece 24 of each linking piece 20 are spread open and stacked onto the corresponding inner surfaces of the left- and right-side boards 11, 12, and then the two cover boards 30 are folded reversely towards the inner surfaces of the left- and right-side boards 11, 12 and stacked onto the corresponding inner surfaces of the two first folding pieces 22, the two positioning pieces 24 and the two flaps 41 to maintain the beautiful appearance of the containing box.

In this embodiment, a side strip 50 is extended outwardly from the outer edge of each cover board 30 and the auxiliary reinforcing board 40. Before the containing box is folded and assembled, each side strip 50 is folded reversely and stacked onto the corresponding inner surfaces of the cover board 30 and the auxiliary reinforcing board 40, and each side strip 50 can be concealed after each cover board 30 and the auxiliary reinforcing board 40 are folded and fixed to the corresponding side board, and the cover board 30 and the auxiliary reinforcing board 40 have beautiful decorative edges after the containing box is assembled.

While the present disclosure has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of this disclosure set forth in the claims. 

What is claimed is:
 1. A quick-assembly containing box, formed by folding a cardboard integrally, comprising a bottom board, a left-side board and a right-side board extending from both left and right sides of the bottom board respectively, and a front-side board and a rear-side board extending from both front and rear sides of the bottom board respectively, wherein each of the four corners at where the left- and right-side boards and the front- and rear-side boards are intersected has a linking piece, and each linking piece has an oblique crease extending diagonally from a junction of the left- and right-side boards and the front- and rear-side boards as a starting point to the outer side, so as to divide each linking piece into a first folding piece adjacent to the sides of the front- and rear-side boards and a second folding piece adjacent to the left- and right-side boards, characterized in that the outer side of each first folding piece has a positioning piece extending from the oblique crease towards the left or right side, and each positioning piece is disposed on the outer side of an adjacent second folding piece, and a cut line is formed between the positioning piece and the second folding piece and the cut line extends from the inside to the outside up to the oblique crease, so that each positioning piece can use the oblique crease as a baseline for folding in advance; and when the front- and rear-side boards are folded towards the bottom board into a half-folded state, the inner surfaces of the first and second folding pieces of each linking piece are stacked closely onto the adjacent left- and right-side boards respectively, and the outer surface of each already folded positioning piece is adhered and fixed to the left- and right-side boards; when the left- and right-side boards are pushed from the outside to the inside with respect to the bottom board to erect the left- and right-side boards, and the positioning piece of each linking piece is provided for pushing forward and erecting the front- and rear-side boards by the first folding piece.
 2. The quick-assembly containing box as claimed in claim 1, wherein each positioning piece is cut evenly with the left and right edges of the left- and right-side boards after the positioning piece is adhered and fixed to the inner surfaces of the left- and right-side boards.
 3. The quick-assembly containing box as claimed in claim 1, wherein the left- and right-side boards have a cover board extending outwardly from the left and right edges, and after the left- and right-side boards and the front- and rear-side boards are lifted and erected with respect to the bottom board, the two cover boards are reversely folded towards the inner surfaces of the left- and right-side boards and stacked onto the inner surfaces of the two corresponding first folding pieces and the two corresponding positioning pieces respectively to cover the two corresponding first folding pieces and the two corresponding positioning pieces.
 4. The quick-assembly containing box as claimed in claim 1, wherein the front- and rear-side boards have an auxiliary reinforcing board extending outwardly from the front and rear edges thereof, and the two auxiliary reinforcing boards are folded reversely and fixed to the inner surfaces of the corresponding front- and rear-side boards respectively.
 5. The quick-assembly containing box as claimed in claim 4, wherein both left and right edges of the two auxiliary reinforcing boards have a flap extending and fixing to the first folding piece of the corresponding side.
 6. The quick-assembly containing box as claimed in claim 4, wherein the outer edges of each cover board and each auxiliary reinforcing board have a side strip extending therefrom, and the side strip is inwardly folded and stacked onto the inner surfaces of the corresponding cover board and auxiliary reinforcing board before the containing box is folded, stacked, and assembled. 